Home / 116,815.20-161,204.86-63,100.19

Finding the Fourth Proportional to 116,815.20, 161,204.86 and 63,100.19

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Solution

The fourth proportional to 116,815.20, 161,204.86 and 63,100.19 is: 87,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,815.20 : 161,204.86 = 63,100.19 : x
  2. Step 2: Convert to fraction form
    116,815.20/161,204.86 = 63,100.19/x
  3. Step 3: Cross multiply
    116,815.20x = 161,204.86 × 63,100.19
  4. Step 4: Simplify right side
    116,815.20x = 10,172,057,776.81
  5. Step 5: Solve for x
    x = 10,172,057,776.81/116,815.20
  6. Step 6: Final answer
    x = 87,078.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.